[{"doi":"10.1007/s10832-007-9183-6","date_updated":"2022-01-06T07:04:16Z","language":[{"iso":"eng"}],"title":"Tactile tissue characterisation by piezoelectric systems","publication_identifier":{"issn":["1385-3449"]},"department":[{"_id":"151"}],"issue":"3-4","intvolume":" 20","_id":"9574","citation":{"mla":"Stroop, Ralf, et al. “Tactile Tissue Characterisation by Piezoelectric Systems.” Journal of Electroceramics, vol. 20, no. 3–4, Springer US, 2008, pp. 237–41, doi:10.1007/s10832-007-9183-6.","bibtex":"@article{Stroop_Uribe_Martinez_Brökelmann_Hemsel_Wallaschek_2008, title={Tactile tissue characterisation by piezoelectric systems}, volume={20}, DOI={10.1007/s10832-007-9183-6}, number={3–4}, journal={Journal of Electroceramics}, publisher={Springer US}, author={Stroop, Ralf and Uribe, David Oliva and Martinez, Melisa Orta and Brökelmann, Michael and Hemsel, Tobias and Wallaschek, Jörg}, year={2008}, pages={237–241} }","apa":"Stroop, R., Uribe, D. O., Martinez, M. O., Brökelmann, M., Hemsel, T., & Wallaschek, J. (2008). Tactile tissue characterisation by piezoelectric systems. Journal of Electroceramics, 20(3–4), 237–241. https://doi.org/10.1007/s10832-007-9183-6","ama":"Stroop R, Uribe DO, Martinez MO, Brökelmann M, Hemsel T, Wallaschek J. Tactile tissue characterisation by piezoelectric systems. Journal of Electroceramics. 2008;20(3-4):237-241. doi:10.1007/s10832-007-9183-6","chicago":"Stroop, Ralf, David Oliva Uribe, Melisa Orta Martinez, Michael Brökelmann, Tobias Hemsel, and Jörg Wallaschek. “Tactile Tissue Characterisation by Piezoelectric Systems.” Journal of Electroceramics 20, no. 3–4 (2008): 237–41. https://doi.org/10.1007/s10832-007-9183-6.","ieee":"R. Stroop, D. O. Uribe, M. O. Martinez, M. Brökelmann, T. Hemsel, and J. Wallaschek, “Tactile tissue characterisation by piezoelectric systems,” Journal of Electroceramics, vol. 20, no. 3–4, pp. 237–241, 2008.","short":"R. Stroop, D.O. Uribe, M.O. Martinez, M. Brökelmann, T. Hemsel, J. Wallaschek, Journal of Electroceramics 20 (2008) 237–241."},"type":"journal_article","year":"2008","page":"237-241","user_id":"55222","abstract":[{"lang":"eng","text":"For devices having non-linear contact, load plays a fundamental role. Variations in the characteristics of the load cause change in eigenfrequency and amplitude of the vibration. In most technical applications, this unwanted behaviour is cancelled by the use of control algorithms. However, multiple applications, like bond quality monitoring or chemical and pressure sensors, have found that the load may be characterised by interpreting the change in characteristics of a resonant vibrating device used as a sensor. Surgical resection of tumours is a very difficult task. After localising the tumour by the use of imaging techniques, the resection demands the surgeon to decide where and what to resect based on visual and tactile differentiation of tumour and healthy tissue. Exactness of this process could be enhanced if we can provide the surgeon with a device capable of evaluating mechanical characteristics of the tissue much more accurately than the surgeon himself can do. As the mechanical characteristics of tumour and healthy tissue differ but slightly, the task is to design a system with high sensitivity. Therefore, we have developed a resonant actuator-sensor that allows the differentiation among distinct media that have similar mechanical characteristics to tumour and healthy tissue using a piezoelectric bimorph. The design is based on the detection and evaluation of frequency shift and amplitude variation of the fundamental and higher harmonics using one layer for the resonant excitation of vibration and the other one as the sensing element."}],"volume":20,"status":"public","date_created":"2019-04-29T12:50:44Z","publisher":"Springer US","quality_controlled":"1","author":[{"full_name":"Stroop, Ralf","first_name":"Ralf","last_name":"Stroop"},{"last_name":"Uribe","first_name":"David Oliva","full_name":"Uribe, David Oliva"},{"full_name":"Martinez, Melisa Orta","first_name":"Melisa Orta","last_name":"Martinez"},{"last_name":"Brökelmann","full_name":"Brökelmann, Michael","first_name":"Michael"},{"full_name":"Hemsel, Tobias","first_name":"Tobias","id":"210","last_name":"Hemsel"},{"last_name":"Wallaschek","full_name":"Wallaschek, Jörg","first_name":"Jörg"}],"publication":"Journal of Electroceramics","keyword":["Piezo ceramics","Bimorph","Tactile sensor","Tumour tissue"]},{"abstract":[{"lang":"eng","text":"In neurosurgery, delineation of tumor boundaries during resection of brain tumors is of substantial relevance. During operation distinction between tumor and healthy tissue rely on the abilities of the surgeon based on visual and tactile differentiation. In this paper a high sensitivity actuator-sensor system using a piezoelectric bimorph is presented. Frequency shift and transfer function of the bimorphpsilas voltages are detected and evaluated. Sensorpsilas sensitivity is evaluated using two frequency controls strategies: A phase-locked loop (PLL) and a self-oscillating circuit. Results of measurements conducted on gel-phantoms are presented and discussed."}],"title":"Development of a biomedical tissue differentiation system using piezoelectric actuators","user_id":"55222","author":[{"last_name":"Uribe","full_name":"Uribe, David Oliva","first_name":"David Oliva"},{"last_name":"Stroop","full_name":"Stroop, Ralf","first_name":"Ralf"},{"last_name":"Hemsel","id":"210","first_name":"Tobias","full_name":"Hemsel, Tobias"},{"full_name":"Wallaschek, Jörg","first_name":"Jörg","last_name":"Wallaschek"}],"quality_controlled":"1","department":[{"_id":"151"}],"keyword":["biomedical measurement","brain","cancer","neurophysiology","phantoms","phase locked loops","piezoelectric actuators","surgery","tactile sensors","transfer functions","tumours","PLL","biomedical tissue differentiation system","brain tumor resection","frequency control","frequency shift","gel-phantom","high sensitivity actuator-sensor system","neurosurgery","phase-locked loop","piezoelectric actuators","piezoelectric bimorph","self-oscillating circuit","sensor sensitivity","tactile differentiation","tactile sensor system","transfer function","tumor boundary","visual differentiation","Biomedical measurements","Circuits","Frequency control","Neoplasms","Neurosurgery","Phase locked loops","Piezoelectric actuators","Surges","Transfer functions","Voltage"],"publication":"Frequency Control Symposium, 2008 IEEE International","publication_identifier":{"issn":["1075-6787"]},"status":"public","date_created":"2019-04-29T13:07:39Z","date_updated":"2022-01-06T07:04:16Z","_id":"9576","doi":"10.1109/FREQ.2008.4622963","type":"conference","citation":{"short":"D.O. Uribe, R. Stroop, T. Hemsel, J. Wallaschek, in: Frequency Control Symposium, 2008 IEEE International, 2008, pp. 91–94.","ieee":"D. O. Uribe, R. Stroop, T. Hemsel, and J. Wallaschek, “Development of a biomedical tissue differentiation system using piezoelectric actuators,” in Frequency Control Symposium, 2008 IEEE International, 2008, pp. 91–94.","apa":"Uribe, D. O., Stroop, R., Hemsel, T., & Wallaschek, J. (2008). Development of a biomedical tissue differentiation system using piezoelectric actuators. In Frequency Control Symposium, 2008 IEEE International (pp. 91–94). https://doi.org/10.1109/FREQ.2008.4622963","ama":"Uribe DO, Stroop R, Hemsel T, Wallaschek J. Development of a biomedical tissue differentiation system using piezoelectric actuators. In: Frequency Control Symposium, 2008 IEEE International. ; 2008:91-94. doi:10.1109/FREQ.2008.4622963","chicago":"Uribe, David Oliva, Ralf Stroop, Tobias Hemsel, and Jörg Wallaschek. “Development of a Biomedical Tissue Differentiation System Using Piezoelectric Actuators.” In Frequency Control Symposium, 2008 IEEE International, 91–94, 2008. https://doi.org/10.1109/FREQ.2008.4622963.","bibtex":"@inproceedings{Uribe_Stroop_Hemsel_Wallaschek_2008, title={Development of a biomedical tissue differentiation system using piezoelectric actuators}, DOI={10.1109/FREQ.2008.4622963}, booktitle={Frequency Control Symposium, 2008 IEEE International}, author={Uribe, David Oliva and Stroop, Ralf and Hemsel, Tobias and Wallaschek, Jörg}, year={2008}, pages={91–94} }","mla":"Uribe, David Oliva, et al. “Development of a Biomedical Tissue Differentiation System Using Piezoelectric Actuators.” Frequency Control Symposium, 2008 IEEE International, 2008, pp. 91–94, doi:10.1109/FREQ.2008.4622963."},"year":"2008","page":"91-94","language":[{"iso":"eng"}]}]